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Method of preventing recirculation pump cavitation and forced recirculation pump type steam-generating apparatus using the method

  • US 4,278,051 A
  • Filed: 03/30/1979
  • Issued: 07/14/1981
  • Est. Priority Date: 04/05/1978
  • Status: Expired due to Term
First Claim
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1. A forced recirculation type steam-generating apparatus in which water therein is circulated forcibly by a pump, comprising:

  • (a) a steam-generating section;

    (b) means for detecting pressure in said steam-generating section;

    (c) means for generating a saturation temperature corresponding to the pressure detected by said pressure detector means;

    (d) means for detecting a temperature of water at a suction side of said pump; and

    (e) means for generating a signal for reducing a rotational speed of said pump when a difference between said detected temperature and said saturation temperature is reduced below a predetermined temperature level, whereby a recirculation flow by said pump is reduced.

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